Snaking in Mario Kart DS. Some hate it, some loath it, some despise it, some like it too. Whether you think it’s fair or not to speed up on a straight lane, it is mentioned in the game’s manual and therefore allowed.
Although like with shortcuts, you can always agree to not do it if you’re in the same room as your opponent. Are you looking to obtain this skill? Go and watch this snaking tutorial, but remember it’s all in good fun, some people might start hating you if you do it non-stop 😉